Encoder Wiring - ABB RTAC-01 User Manual

Encoder wiring

construction
Conductor cross-
sectional area
Maximum cable length
RTAC-01 User's manual
The pulse encoder should be connected to the RTAC
module with a cable specified below.
Cable
Either a single-ended or differential connection can be
used, but the manufacturer's recommendations should
be taken into account. Starting on page 3-8, there are
wiring diagrams for different encoder output types.
Compare encoder documentation and the diagrams
below to determine the output type.
Note: The cable shields should be earthed at the RTAC
module only if the encoder is not isolated from the
motor and earth. However, if the encoder is isolated
from the motor and earth, the cable shields are to be
connected to the encoder housing also.
Note: Do not route the encoder cables parallel to power
(eg. motor) cables.
4 × (2+1) Twisted pair cable with individual
and overall shields.
2
0.5 to 1.0 mm
Dependent on encoder output type as follows:
300 m (differential push-pull)
200 m (single-ended push-pull)
100 m (open collector or emitter)
Chapter 3 – Installation
3-5